"This disorder is called Meralgia Paresthetica and it's a disorder that occurs when one of the nerves that runs in the outer part of a thigh gets compressed. The pressure on it causes symptoms of tingling, numbness and pain in the outer part of the thigh."

According to Boyle, sufferers report a floating sensation—basically, because they can't feel their lower legs—along with pain in the thighs. Ouch. Unfortunately for women, the problem can be exacerbated by high heels, which cause the pelvis to tilt, increasing the pressure on the nerves in question.

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Still, men have to face up to the fact that cosseting jeans reduce airflow around the crotch, resulting in higher temperatures. And the knock on effect of warmer balls is, sadly, a lower sperm count.

To alleviate nerve damage, Boyle suggests buying skinny jeans with a little stretch to them. And whatever you do, if you get pain or numbness in your legs thanks to tight jeans, shift up a size—otherwise, you're risking doing permanent damage to your nerves. As for curing the overheating, well, I'll leave that to your imagination. [ABC]